INVENTORIES (Tables)

6 Months Ended

Sep. 30, 2013

INVENTORIES

Schedule of components of inventories

(In thousands)	September 30, 2013		March 31, 2013
Raw materials, completed sub-assemblies, and spare parts	$	16,534	$	21,450
Work-in-process	30,349		21,129
Finished goods	3,925		5,472
Total	$	50,808	$	48,051